Discharge can be a noun or a verb; it has multiple meanings in physics, chemistry, military, and legal usage. The most common medical meaning is a substance that is being excreted. Examples: pus is the discharge from a pimple; a vaginal discharge can mean infection; an ear discharge can mean an infection of the outer ear tract; a nasal discharge may be a 'cold'.
...Read more

3

Yes:
Men can have a clear, occasionally milky, discharge with erections, after erections, and after ejaculation. The clear discharge with the erection is commonly referred to as "pre-cum" and prepares the urethra to carry semen. After erections, some of this pre-cum may still be in the urethra and leak out. After ejaculation, residual semen may leak out. See your doc, if there is pain or continues.
...Read more

8

None:
Except for a bit of lubricant when you're all excited, you shouldn't have any. If you have to ask, and it's not just from eating those little hot peppers, it might be time to be seen by your physician.
...Read more

9

Penile Discharge:
If you did not get tested or treated then you probably have 'recovered' enough to be asymptomatic but that does not mean you are not still contagious for either chlamydia or gonorrhea or both. Please get to your doctor for testing or to the std clinic.
...Read more